- 标题
- 摘要
- 关键词
- 实验方案
- 产品
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[IEEE 2019 Third World Conference on Smart Trends in Systems Security and Sustainablity (WorldS4) - London, United Kingdom (2019.7.30-2019.7.31)] 2019 Third World Conference on Smart Trends in Systems Security and Sustainablity (WorldS4) - Secured Key Generation and Transmission, using Intel-SGX and Optical Communications
摘要： Key distribution is a growing concern for symmetric cryptography and PKI certificate management. Most of the current key-distribution mechanisms assume the use of the Internet and LAN/WAN networks, which are exposed to security hazards and other weaknesses. To overcome them, the use of comprehensive and robust cryptographic mechanisms, such as RSA are proposed. Another solution is the use of PKI/CA, which generates certificates and distributes them directly to the sender and receiver. This paper introduces a strict security approach covering the entire process, from key/certificate generation to the use of the received key by the other party. The approach is based on the following two elements: a. generation of a key/certificate in a highly secured environment provided by Intel-SGX technology. b. Key distribution using undetected high-speed optical camera communication (OCC), based on the rolling shutter effect of modern smart cameras. The Intel SGX processor enables the creation and protection of random keys and supports secure encryption and decoding of information. The key/certificate transfer is done by blinking LED lights in a specific sequence and frequency, following a coding system. The receiver decodes the received blinks to a bit string using a corresponding image processing application. This optical media ensures secure transfer without the ability to quote it. The experiment results show that this method is feasible, efficient, and implementable.
关键词： Intel-SGX,PKI/CA,Optical communications,Encryption key,Secured Key distribution
更新于2025-09-16 10:30:52
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[IEEE 2019 18th International Conference on Optical Communications and Networks (ICOCN) - Huangshan, China (2019.8.5-2019.8.8)] 2019 18th International Conference on Optical Communications and Networks (ICOCN) - Chaotic Discrete Cosine Transform for Physical-Layer Data Encryption in OFDM-PON
摘要： Chaotic discrete cosine transform is proposed to enhance both the physical-layer security and the transmission performance in OFDM-PON. Experimentally, secure transmission of 13.3Gb/s OFDM signals shows a ~1.5 dB (BER@10-3) improvement in receiver sensitivity.
关键词： Optical Communications,data encryption,chaotic discrete cosine transform,network security
更新于2025-09-16 10:30:52
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[IEEE 2019 18th International Conference on Optical Communications and Networks (ICOCN) - Huangshan, China (2019.8.5-2019.8.8)] 2019 18th International Conference on Optical Communications and Networks (ICOCN) - Industry Trends for 400 Gb/s and Beyond Applications
摘要： After the implementation of 100-Gb/s pluggable optics, the optical communications is marching towards 400-Gb/s era. We will review our recent demonstration and study for 400 Gb/s and beyond client and line side optical interconnect.
关键词： coherent communication,optical communications,400G Ethernet,direct detection,packet optics
更新于2025-09-16 10:30:52
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[IEEE 2019 18th International Conference on Optical Communications and Networks (ICOCN) - Huangshan, China (2019.8.5-2019.8.8)] 2019 18th International Conference on Optical Communications and Networks (ICOCN) - Volterra-based fiber nonlinearity impairment modeling for OFDM/OQAM systems
摘要： In this paper, we have reported for the first time the fiber nonlinearity application of Volterra-based impairment modeling for OFDM/OQAM systems. Based the proposed model, a novel compensation method can be presented by simulations later.
关键词： Digital signal processing techniques for optical communications,transmission impairments and their mitigations,multiplexing and demultiplexing techniques including OTDM, OFDM, OCDM and SDM
更新于2025-09-16 10:30:52
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Free-Space Optical Communications with Detector Arrays: A Mathematical Analysis
摘要： Photon counting detector arrays are commonly used for free-space optical communications in deep space. Such detector arrays—by virtue of their size—help in the collection of the optical signal even when there is some misalignment between the transmitter and receiver systems. In this paper, we argue that, for the common Gaussian beam pro?le, a detector array receiver is more useful for minimizing the probability of error than a single detector receiver of the same dimensions. Furthermore, the improvement in the error probability is more pronounced for low signal-to-noise ratio conditions, and the probability of error decreases monotonically as a function of the number of detectors in the array. However, communication with detector arrays results in a larger computational and hardware complexity at the receiver.
关键词： Free-space optical communications,photon counting detector arrays,error probability,Gaussian beam
更新于2025-09-16 10:30:52
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Building a Truly Dynamic Filterless Metro Network by Reusing a Commercial PON's Data-Plane and a Novel SDN-enabled Control-Plane
摘要： The migration of DataCenters into Metropolitan Area Networks creates new challenges which include the need for rapid service provisioning and recovery and new, cost-effective, connectivity schemes. Here we propose and demonstrate a truly dynamic transportation platform tailored for a metro network. The novelty of the proposed architecture is that the dynamic data-plane exploits available commercial PON technology while the control-plane is SDN-enabled dynamic using OpenFlow/Netconf. The dynamic operation of the platform in several interesting scenarios is demonstrated on an experimental test-bed.
关键词： optical communications,OpenFlow,metropolitan area networks,filterless network architecture,control-plane,SDN,Netconf
更新于2025-09-16 10:30:52
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An Efficient DFG Induced Wavelength Exchanged-OPC Using Only Two Ti:PPLN Waveguides with Single Pump Configuration
摘要： An unconventional single pump configuration of Wavelength Exchanged Optical Phase Conjugation (WE-OPC) through Difference Frequency Generation (DFG) employing two identical Ti:PPLN waveguides having same grating period and a single pump source is theoretically analyzed and simulated resulting in higher conversion efficiency of OPC.WE-OPC has been found very effective in extenuating nonlinearity and inflating spectral efficiency in optical transmission systems. The proposed WE-OPC enabled WDM optical transmission system modeled as a wavelength converter has been simulated with 10 channels offering much higher conversion efficiencies of about 3.3 dB and 3.49 dB for higher frequency band to lower frequency band and vice versa respectively.
关键词： Fiber optics communications,Dispersion compensation devices,Fiber optics and optical communications,Optical Phase conjugation,Wavelength conversion devices
更新于2025-09-12 10:27:22
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[IEEE 2019 Conference on Lasers and Electro-Optics Europe & European Quantum Electronics Conference (CLEO/Europe-EQEC) - Munich, Germany (2019.6.23-2019.6.27)] 2019 Conference on Lasers and Electro-Optics Europe & European Quantum Electronics Conference (CLEO/Europe-EQEC) - Analysis of Optical Frequency Comb Generation in Gain-Switched Semiconductor Lasers
摘要： An Optical Frequency Comb (OFC) Generator is a laser source emitting an equally spaced group of optical tones. These types of optical sources have found application in different fields, such as spectroscopy [1] and optical communications [2]. Among the three main techniques for generating OFCs from semiconductor lasers, namely gain switching, electro-optic modulation and mode-locking, gain switching (GS) has attracted attention due to the simple selection of the repetition frequency and its easy implementation and low cost. We present here an exhaustive and systematic comparative analysis of the OFC generation using GS in semiconductor lasers. We have used a theoretical model, based on three stochastic differential equations that include non-linear saturation and Langevin noises, in order to simulate the experimental results. The experimental and simulated response has been studied in order to identify the main physical processes involved in the generation of GS OFC. An experimental characterization, based on RIN spectra measurements [5], was used to extract the parameters of the model. The OFC generator consists on a Discrete Mode Laser (DML), which is driven in GS operation using a bias current and a sinusoidal signal. High-resolution spectra were measured with a Brillouin Optical Spectrum Analyzer (BOSA).
关键词： Optical Frequency Comb,Spectroscopy,Optical Communications,Semiconductor Lasers,Gain Switching
更新于2025-09-12 10:27:22
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[IEEE 2019 Conference on Lasers and Electro-Optics Europe & European Quantum Electronics Conference (CLEO/Europe-EQEC) - Munich, Germany (2019.6.23-2019.6.27)] 2019 Conference on Lasers and Electro-Optics Europe & European Quantum Electronics Conference (CLEO/Europe-EQEC) - Highly Flat Optical Frequency Comb Based on the Time Lens Principle
摘要： Broad bandwidth optical frequency combs (OFCs) have received much attention in recent years due to a dramatic growth of their applications, such as spectroscopy measurements, microwave photonics applications, and optical communications. There are several advanced optical superchannel systems, which have been practically implemented by OFCs, such as a Tbit/s coherent optical orthogonal frequency division multiplexing (OFDM) system [1] and Tbit/s single-channel coherent Nyquist pulse transmission systems with high spectral efficiency [2], etc. Those systems require the OFC with a high degree of flatness and broad bandwidth that are difficult to achieve with conventional methods based on sinusoidal phase modulation (SPM).
关键词： microwave photonics,optical frequency combs,Nyquist pulse transmission,OFDM,spectroscopy measurements,optical communications
更新于2025-09-12 10:27:22
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Gb/s underwater wireless optical communications using series-connected GaN micro-LED arrays
摘要： High speed wireless communications are highly desirable for many industrial and scientific underwater applications. Acoustic communications suffer from high latency and limited data rates, while Radio Frequency communications are severely limited by attenuation in seawater. Optical communications are a promising alternative, offering high transmission rates (up to Gb/s), while water has relatively low attenuation at visible wavelengths. Here we demonstrate the use of series-connected micro-light-emitting-diode (μLED) arrays consisting of 6 μLED pixels either 60 μm or 80 μm in diameter and operating at 450 nm. These devices increase the output power whilst maintaining relatively high modulation bandwidth. Using orthogonal frequency division multiplexing (OFDM) we demonstrate underwater wireless data transmission at rates of up to 4.92 Gb/s, 3.22 Gb/s and 3.4 Gb/s over 1.5 m, 3 m and 4.5 m, respectively, with corresponding bit error ratios (BERs) of 1.5×10-3, 1.1×10-3 and 3.1×10-3, through clear tap water, and Mb/s rates through >5 attenuation lengths (ALs) in turbid waters.
关键词： Underwater wireless optical communications,GaN,micro-light-emitting-diode arrays,turbid waters
更新于2025-09-12 10:27:22